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Broken Glass Window in Wall
The window in the Beckman Coulter DU-800 is broken, the dimensions are 3.5 cm x 3.5 cm x 1.67 mm thick and can be fixed upon receiving a replacement part does anyone have something?
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Cannot Create Good Calibration Curve for Lead
When i aspirate, 2,4,5,6 ppm of lead to the instrument the peak doesn't create good, in cookbook its wrote that for ppm must have 0.2Absorbance, but it never get that no., and it about 0.15-0.16absorbance.
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UV/Vis TNT Method Development
The problem was - in method development of rapid-use TNT vials, when a wavelength scan reveals a different wavelength that shows much more sensitive absorbance, than is automatically selected by the TNT vials. Doing a little bit of method development, I found a wavelength with more selectivity than the one that was chosen and programmed for HR SO4 (~150-900 ppm). I did find a way around this, but I would like to hear from other chemists/Hach development scientists.
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Turbo Pump Issues
After a power outage, my vacuum on turbo pumps 1 stays in accelerating mode and never goes to ready. How do I diagnose and repair the fault?
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